Good afternoon, I am sure this has been mentioned on here many times, but every time I search for my problem, I always get the same results: Third party this, format this, backup your data that. Here is what is going on. I have a 2TB external hard drive that is more than 90% full. backing up my data via third party software is not an option because I don't have room to store the data anywhere. The copious amount of data on the drive is also why I can not just simply format the drive to change the file system. I have also tried a couple of methods involving check disk commands and using disk management. neither of these methods have worked out in my favor. This problem has really shaken my confidence with computers and troubleshooting. up until this point I thought I was pretty well educated on fixing stuff like this, but I really can not figure this one out. So here's the summary: large hard drive, no formatting, no backing up the data, RAW to NTFS. Thank you.